Electron beam welding-aerospace applications, Mechanical Engineering

AEROSPACE APPLICATIONS

 

The need for EBW as a critical fabrication process in realising elements and assemblies for spacecraft and launch vehicle programmes due to the following unique requirements.

  1. Welded joints appear in the most critical sections and the performance of the elements / systems depends upon the quality and reliability of these joints.
  2. Requirements of high quality leak proof welded joints for space craft propulsion system with long mission lives under extreme space environment.
  3. Elimination of catastrophic failures in case of launch vehicle propellant tankage assemblies with common bulk head configuration.
  4. Requirement for achieving high quality welds in case of spacecraft thrusters and engines involving materials like Ti, Cb, etc
  5. Distortion free joining for realising thin walled Ti alloy propellant tankage assemblies for spacecraft involving upto 75 EBW joints in a single tankage assembly.
  6. Requirements of achieving high quality joining of thick sections of titanium alloy hemisphere for high pressure helium gas bottles.


Titanium forgings have been joined by EBW t o form a rot or hub of 3000 mm in diameter for a new helicopter. The Ti - 6 AI - 4 V alloy parts of 55 mm and 255 mm thick are EB welded in one pass and joined in the areas of the hub. The hub and blade of the helicopter were formed by EBW since hub and blades could not be forged in one piece. EB welding is being extensively used to join Inconel 718 components together on the engines for the space shuttle.

Posted Date: 9/17/2012 7:47:17 AM | Location : United States







Related Discussions:- Electron beam welding-aerospace applications, Assignment Help, Ask Question on Electron beam welding-aerospace applications, Get Answer, Expert's Help, Electron beam welding-aerospace applications Discussions

Write discussion on Electron beam welding-aerospace applications
Your posts are moderated
Related Questions
Helium Helium (He) is an inert, very light monoatomic gas, of atomic weight of 4. It is obtained by separation from natural gas. Helium is refined to a purity of min.  99.99

Q. Mechanical Data for Line Designation Tables? Line Designation Tables (LDT's) are initially generated by the Piping designers. Design conditions are inputed by the Process di

applications of dynamically induced emf

Evaluate the tension in the rope: Determine the tension in the rope. Solution KE of the free-body of flywheel is developed due to (i) work-done by tension T in the rop

Formula for maximum power transmitted by belt: Derive formula for maximum power transmitted by belt when centrifugal tension is considered. Sol: Let T 1  = Tension on

Extension of auger in the main auger arrangement The original size of screw conveyer without auger extension is 2.5 m., which is same as size of chassis. Which to be attach wit

Q. What is Precipitation? Precipitation includes rain, snow and hail. The maximum, average, and storm volumes will have an impact on the size and positioning of facilities to c

1. A continuous steady-state process involving components A, B, and C is shown below, along with the known process information a) On the flowchart, assign variables for the unkn

Find the speed of shaft : Find the speed of shaft driven with the belt by an engine running at 600 rotation per minute. The thickness of belt is 2cm, diameter of engine pulle

what is the use of crankshaft?